<?php  // $Id: pending.php,v 1.11.2.5 2008/12/05 08:57:07 tjhunt Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.org											//
//																	   //
// Copyright (C) 1999 onwards Martin Dougiamas  http://dougiamas.com	 //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

/**
 * Allow the administrator to look through a list of course requests and approve or reject them.
 *
 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
 * @package course
 *//** */

	require_once(dirname(__FILE__) . '/../config.php');
	require_once($CFG->libdir . '/pagelib.php');
	require_once($CFG->libdir . '/blocklib.php');
	require_once($CFG->libdir . '/adminlib.php');
	require_once($CFG->dirroot . '/course/lib.php');
	require_once($CFG->dirroot . '/course/request_form.php');

	require_login();
	require_capability('moodle/site:approvecourse', get_context_instance(CONTEXT_SYSTEM));

	$approve = optional_param('approve', 0, PARAM_INT);
	$reject = optional_param('reject', 0, PARAM_INT);

	$baseurl = $CFG->wwwroot . '/course/pending.php';
	admin_externalpage_setup('coursespending');

/// Process approval of a course.
	if (!empty($approve) and confirm_sesskey()) {
	/// Load the request.
		if (!$course = get_record('course_request', 'id', $approve)) {
			print_error('unknowncourserequest');
		}
		foreach (array_keys((array)$course) as $key) {
			$course->$key = addslashes($course->$key);
		}

	/// Ensure all is well before proceeding.
		fix_course_sortorder();
		if (empty($CFG->defaultrequestcategory) or !record_exists('course_categories', 'id', $CFG->defaultrequestcategory)) {
		/// default to first top level directory, hacky but means things don't break
			$CFG->defaultrequestcategory = get_field('course_categories', 'id', 'parent', '0');
		}

	/// Build up a course record based on the request.
		$course->category = $CFG->defaultrequestcategory;
		$course->sortorder = get_field_sql("SELECT min(sortorder)-1 FROM {$CFG->prefix}course WHERE category=$course->category");
		if (empty($course->sortorder)) {
			$course->sortorder = 1000;
		}
		$course->requested = 1;
		unset($course->reason);
		unset($course->id);
		$teacherid = $course->requester;
		unset($course->requester);
		$course->teacher = get_string("defaultcourseteacher");
		$course->teachers = get_string("defaultcourseteachers");
		$course->student = get_string("defaultcoursestudent");
		$course->students = get_string("defaultcoursestudents");
		if (!empty($CFG->restrictmodulesfor) && $CFG->restrictmodulesfor != 'none' && !empty($CFG->restrictbydefault)) {
			$course->restrictmodules = 1;
		}

	/// Insert the record.
		if ($courseid = insert_record('course', $course)) {
			$page = page_create_object(PAGE_COURSE_VIEW, $courseid);
			blocks_repopulate_page($page); // Return value not checked because you can always edit later
			$context = get_context_instance(CONTEXT_COURSE, $courseid);
			role_assign($CFG->creatornewroleid, $teacherid, 0, $context->id); // assing teacher role
			$course->id = $courseid;
			if (!empty($CFG->restrictmodulesfor) && $CFG->restrictmodulesfor != 'none' && !empty($CFG->restrictbydefault)) { // if we're all or requested we're ok.
				$allowedmods = explode(',',$CFG->defaultallowedmodules);
				update_restricted_mods($course,$allowedmods);
			}
			delete_records('course_request','id',$approve);
			$success = 1;
		}
		if (!empty($success)) {
			$user = get_record('user','id',$teacherid);
			$a->name = $course->fullname;
			$a->url = $CFG->wwwroot.'/course/view.php?id='.$courseid;
			$a->teacher = $course->teacher;
			email_to_user($user, $USER, get_string('courseapprovedsubject'),
					get_string('courseapprovedemail', 'moodle', $a));
			redirect($CFG->wwwroot.'/course/edit.php?id='.$courseid);

		} else {
			print_error('courseapprovedfailed');
		}
	}

/// Process rejection of a course.
	if (!empty($reject)) {
	/// Load the request.
		if (!$course = get_record('course_request', 'id', $reject)) {
			print_error('unknowncourserequest');
		}

	/// Prepare the form.
		$rejectform = new reject_request_form($baseurl);
		$default = new stdClass();
		$default->reject = $reject;
		$rejectform->set_data($default);

	/// Standard form processing if statement.
		if ($rejectform->is_cancelled()){
			redirect($baseurl);
	
		} else if ($data = $rejectform->get_data()) {
		/// Send an email to the requester.
			$user = get_record('user', 'id', $course->requester);
			email_to_user($user, $USER, get_string('courserejectsubject'),
					get_string('courserejectemail', '', $data->rejectnotice));

		/// Delete the request
			delete_records('course_request', 'id', $course->id);

		/// Redirect back to the course listing.
			redirect($baseurl, get_string('courserejected'));
		}

	/// Display the form for giving a reason for rejecting the request.
		admin_externalpage_print_header($rejectform->focus());
		$rejectform->display();
		admin_externalpage_print_footer();
		exit;
	}

/// Print a list of all the pending requests.
	admin_externalpage_print_header();

	$pending = get_records('course_request');
	if (empty($pending)) {
		print_heading(get_string('nopendingcourses'));
	} else {
		print_heading(get_string('coursespending'));

	/// Build a table of all the requests.
		$table->class = 'pendingcourserequests generaltable';
		$table->align = array('center', 'center', 'center', 'center', 'center', 'center', 'center');
		$table->head = array('&nbsp;', get_string('shortname'), get_string('fullname'),
				get_string('requestedby'), get_string('summary'), get_string('requestreason'), get_string('action'));
		$strrequireskey = get_string('requireskey');

	/// Loop over requested courses.
		foreach ($pending as $course) {
			$requester = get_record('user', 'id', $course->requester);
			$row = array();

		/// Check here for shortname collisions and warn about them.
			if (record_exists('course', 'shortname', $course->shortname)) {
				$course->shortname .= ' [*]';
				$collision = 1;
			}

		/// Show an enrolment key icon in the first column if applicable.
			if (!empty($course->password)) {
				$row[] = '<img hspace="1" alt="'.$strrequireskey.'" class="icon" src="'.$CFG->pixpath.'/i/key.gif" />';
			} else {
				$row[] = '';
			}

		/// Info in the other columns.
			$row[] = format_string($course->shortname);
			$row[] = format_string($course->fullname);
			$row[] = fullname($requester);
			$row[] = format_string($course->summary);
			$row[] = format_string($course->reason);
			$row[] = print_single_button($baseurl, array('approve' => $course->id, 'sesskey' => sesskey()), get_string('approve'), 'get', '', true) .
					print_single_button($baseurl, array('reject' => $course->id), get_string('rejectdots'), 'get', '', true);

		/// Add the row to the table.
			$table->data[] = $row;
		}

	/// Display the table.
		print_table($table);

	/// Message about name collisions, if necessary.
		if (!empty($collision)) {
			print_string('shortnamecollisionwarning');
		}
	}

/// Finish off the page.
	print_single_button($CFG->wwwroot . '/course/index.php', array(), get_string('backtocourselisting'));
	admin_externalpage_print_footer();
?>
